main {
    width: 1226px;
    position: relative;
    margin: 0 auto;
}
html,body{
    height: 100%
}
.item-box {
    display: flex;
    justify-content: space-between;
    flex-direction: row;
    flex-wrap: wrap;
    margin:16px 0;
}

.item-box>img {
    width: 296px;
    height: 429px;
    transition: 0.4s;
}

.item-box>img:hover {
    box-shadow: 0px 5px 10px 1px #CECECE;
    top: -2px;
    cursor: pointer;
}